23 x 122 hs 407

Attached are a couple of photos of a 23 X 122 HS 407 experimental round.

Has anyone any information on it they can post on the forum please?

All INERT, primer oiled etc.

Thanks.

Dave.

23 m/m

Hi dave,
you have three variations of the 23x122 Hispano Suiza
the first one which looks to be yours; HS drawing 130.588 dated 14-06-1938 used effectively with a 407 barrel , primer is an "etoupille" 10 m/m diameter ; rim thickness is 3.5 m/m
The s econd HS drawing C ?? 760 dated 31 -10-1934 used with a 401 barrel berdan primer diameter 7.80, rim thicknes is 2.5 m/m
third is a variation of number two , same HS drawing number dated 04-10-1934 the lower part of case just above the groove has a rounded shape ( like oerlikon) used in 401 barrel
I have nothing else. Those 3 variations were made by socit franaise des munitions for experiments prior WWII
H.A.N.D
phil

Hi Phil, thanks, excellent information again.
Dave.

The gun was at an advanced stage of development in 1940, and was I believe fitted to one Dewoitine D.520 (IIRC) which was sent off on an anti-tank mission, but it never returned.

The ballistics were the same as the Soviet VYa-23: 200g at 900 m/s. Quite a hot gun.

Thanks Tony, any info/photos on the AP projectiles?
Dave.

No, sorry.